define color space for Avatar background

[jmt85]

the avatar background should get a defined color space

The coler should calculate from e-mail and Name

the color space comes from Britta

[mr-gosh]

it should be used the same color calculation in desktop and android - if possible...

[mr-gosh]

we could check how other projects define there avatar background colors,
or we just use https://github.com/wada811/Android-Material-Design-Colors/blob/master/library/src/main/res/values/colors.xml and in every "normal" color (not grey or blue-grey) we use the color-rooms 500 - 900 except yellow there it sould be 600 - 900.

[mr-gosh]

    <color name="md_red_500">#f44336</color>
    <color name="md_red_600">#e53935</color>
    <color name="md_red_700">#d32f2f</color>
    <color name="md_red_800">#c62828</color>
    <color name="md_red_900">#b71c1c</color>
    <color name="md_pink_500">#e91e63</color>
    <color name="md_pink_600">#d81b60</color>
    <color name="md_pink_700">#c2185b</color>
    <color name="md_pink_800">#ad1457</color>
    <color name="md_pink_900">#880e4f</color>
    <color name="md_purple_500">#9c27b0</color>
    <color name="md_purple_600">#8e24aa</color>
    <color name="md_purple_700">#7b1fa2</color>
    <color name="md_purple_800">#6a1b9a</color>
    <color name="md_purple_900">#4a148c</color>
    <color name="md_deep_purple_500">#673ab7</color>
    <color name="md_deep_purple_600">#5e35b1</color>
    <color name="md_deep_purple_700">#512da8</color>
    <color name="md_deep_purple_800">#4527a0</color>
    <color name="md_deep_purple_900">#311b92</color>
    <color name="md_indigo_500">#3f51b5</color>
    <color name="md_indigo_600">#3949ab</color>
    <color name="md_indigo_700">#303f9f</color>
    <color name="md_indigo_800">#283593</color>
    <color name="md_indigo_900">#1a237e</color>
    <color name="md_blue_500">#2196f3</color>
    <color name="md_blue_600">#1e88e5</color>
    <color name="md_blue_700">#1976d2</color>
    <color name="md_blue_800">#1565c0</color>
    <color name="md_blue_900">#0d47a1</color>
    <color name="md_light_blue_500">#03a9f4</color>
    <color name="md_light_blue_600">#039be5</color>
    <color name="md_light_blue_700">#0288d1</color>
    <color name="md_light_blue_800">#0277bd</color>
    <color name="md_light_blue_900">#01579b</color>
    <color name="md_cyan_500">#00bcd4</color>
    <color name="md_cyan_600">#00acc1</color>
    <color name="md_cyan_700">#0097a7</color>
    <color name="md_cyan_800">#00838f</color>
    <color name="md_cyan_900">#006064</color>
    <color name="md_teal_500">#009688</color>
    <color name="md_teal_600">#00897b</color>
    <color name="md_teal_700">#00796b</color>
    <color name="md_teal_800">#00695c</color>
    <color name="md_teal_900">#004d40</color>
    <color name="md_green_500">#4caf50</color>
    <color name="md_green_600">#43a047</color>
    <color name="md_green_700">#388e3c</color>
    <color name="md_green_800">#2e7d32</color>
    <color name="md_green_900">#1b5e20</color>
    <color name="md_light_green_500">#8bc34a</color>
    <color name="md_light_green_600">#7cb342</color>
    <color name="md_light_green_700">#689f38</color>
    <color name="md_light_green_800">#558b2f</color>
    <color name="md_light_green_900">#33691e</color>
    <color name="md_lime_600">#c0ca33</color>
    <color name="md_lime_700">#afb42b</color>
    <color name="md_lime_800">#9e9d24</color>
    <color name="md_lime_900">#827717</color>
    <color name="md_yellow_600">#fdd835</color>
    <color name="md_yellow_700">#fbc02d</color>
    <color name="md_yellow_800">#f9a825</color>
    <color name="md_yellow_900">#f57f17</color>
    <color name="md_amber_500">#ffc107</color>
    <color name="md_amber_600">#ffb300</color>
    <color name="md_amber_700">#ffa000</color>
    <color name="md_amber_800">#ff8f00</color>
    <color name="md_amber_900">#ff6f00</color>
    <color name="md_orange_500">#ff9800</color>
    <color name="md_orange_600">#fb8c00</color>
    <color name="md_orange_700">#f57c00</color>
    <color name="md_orange_800">#ef6c00</color>
    <color name="md_orange_900">#e65100</color>
    <color name="md_deep_orange_500">#ff5722</color>
    <color name="md_deep_orange_600">#f4511e</color>
    <color name="md_deep_orange_700">#e64a19</color>
    <color name="md_deep_orange_800">#d84315</color>
    <color name="md_deep_orange_900">#bf360c</color>
    <color name="md_brown_500">#795548</color>
    <color name="md_brown_600">#6d4c41</color>
    <color name="md_brown_700">#5d4037</color>
    <color name="md_brown_800">#4e342e</color>
    <color name="md_brown_900">#3e2723</color>

[mr-gosh]

please use this fixed list of colours for the avatar backgrounds - and the colour must be cross platform - so whatever you calculate should result in the same colour - no matter which platform i use...

[mr-gosh]

or we go the signal way: https://github.com/WhisperSystems/Signal-Android/blob/ec63f7014e5e67993ac0793cc94de092d2b7eca6/src/org/thoughtcrime/securesms/contacts/avatars/ContactColors.java

[julianseeger]

linked the android colors at #408

[mr-gosh]

@JoGir here they are