FI-2077: Improve colors and contrasts for a11y

[AlyssaWang]

Summary

Addresses the following issues:

1. Low contrast between red errors and orange focus on input fields: input color changed from primary to secondary (blue).

2. Disabled buttons with the contained style have color contrast issues: font weight increased to mitigate this issue. I don't think colors can be changed much without compromising the disabled status indicator.

3. Hover state of the buttons has too low of a visual change and should be made more clearly visible: changed the color on text style buttons to improve contrast between the button and the background

4. The green 'pass' and red 'fail' icons' visual contrast for users with protanopia and deuteranopia is extremely low: increased the saturation on the red color to improve contrast (red: rgb(211, 47, 47), green: rgb(76, 175, 80))

5. Tabs in the Test results are shown in normal weight font while the tabs in the configuration messages are in a bold font, which makes the text appear darker almost to the point of having the same visual contrast as the active tabs color: after trying a number of different colors, they all seem to have this issue. Since there is a bottom border than indicates active status, I think this is OK to leave as is.

[codecov]

Codecov Report

Patch coverage has no change and project coverage change: +17.40% 🎉

Comparison is base (3b09428) 76.95% compared to head (cffb61a) 94.36%.

Additional details and impacted files

@@             Coverage Diff             @@
##             main     #392       +/-   ##
===========================================
+ Coverage   76.95%   94.36%   +17.40%     
===========================================
  Files         213      116       -97     
  Lines       10597     3140     -7457     
  Branches      978      393      -585     
===========================================
- Hits         8155     2963     -5192     
+ Misses       1873      177     -1696     
+ Partials      569        0      -569     

Flag	Coverage Δ
backend	94.36% <ø> (ø)
frontend	?

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see 97 files with indirect coverage changes

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[arscan]

Loaded it up and the updates to the form colors and the pass/fail colors look good to me.