chore(colors): remove some deprecated colors

[kathaypacific]

Description

This PR removes the following colors:

• error (replace with errorDark)
• ivory (replace with gray1)
• accentDisabled (since this is technically part of the colors, i just inlined the opacity in the 2 places that need it)
• goldBrand (it wasn't being used except in a loading indicator, which i changed to accent like most other loaders)
• infoLight (replace with successLight, it is part of the dapp claim shortcuts card and is not so important)

Test plan

n/a

Related issues

• Related to RET-1293

Backwards compatibility

Y

Network scalability

If a new NetworkId and/or Network are added in the future, the changes in this PR will:

• Continue to work without code changes, OR trigger a compilation error (guaranteeing we find it when a new network is added)

[kathaypacific]

useColors defaulted to false and wasn't being set to true anywhere

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 89.12%. Comparing base (ffd0eaf) to head (ff61d3a).
Report is 1 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main    #6415   +/-   ##
=======================================
  Coverage   89.11%   89.12%           
=======================================
  Files         737      737           
  Lines       31887    31876   -11     
  Branches     6053     6050    -3     
=======================================
- Hits        28416    28408    -8     
+ Misses       3275     3273    -2     
+ Partials      196      195    -1     

Files with missing lines	Coverage Δ
src/backup/QuizzBottom.tsx	90.00% <ø> (ø)
src/components/CircleButton.tsx	100.00% <ø> (ø)
src/components/CodeInput.tsx	100.00% <ø> (ø)
src/components/CurrencyDisplay.tsx	67.21% <100.00%> (+0.80%)	⬆️
src/components/DevSkipButton.tsx	76.66% <ø> (ø)
src/components/ErrorMessageInline.tsx	92.00% <ø> (ø)
src/components/PercentageIndicator.tsx	100.00% <100.00%> (ø)
src/components/SmartTopAlert.tsx	79.03% <ø> (ø)
src/dapps/DappShortcutsRewards.tsx	97.22% <100.00%> (ø)
src/earn/poolInfoScreen/SafetyCard.tsx	100.00% <100.00%> (ø)
... and 9 more

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[jeanregisser]

🚀