#88 Update light mode colors for stake page

[nevendyulgerov]

Uses this branch/PR as base.

[vercel[bot]]

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Name	Status	Preview	Comments	Updated (UTC)
rollups	✅ Ready (Inspect)	Visit Preview	💬 Add feedback	Sep 8, 2023 1:21pm
staking	✅ Ready (Inspect)	Visit Preview	💬 Add feedback	Sep 8, 2023 1:21pm

[coveralls]

Pull Request Test Coverage Report for Build 5973950325

• 25 of 25 (100.0%) changed or added relevant lines in 11 files are covered.
• No unchanged relevant lines lost coverage.
• Overall coverage increased (+0.03%) to 73.259%

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Totals
Change from base Build 5971042905:	0.03%
Covered Lines:	2706
Relevant Lines:	3509

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💛 - Coveralls