[Eco Bounty] Delegate Logos Not Visible in Dark Mode

Summary

Some delegate logos are not visible or appear too dark against the site’s dark background in IoTeX Hub’s staking dashboard.

Steps to Reproduce

1. Visit https://hub.iotex.io/staking.

2. Observe the Delegate List section.

3. Compare each delegate’s logo under the “Delegate” column.

Actual Result

❌ Some delegate logos (e.g., PNP, Core-Dev, CryptoGiraffe) have dark colors that blend into the background, making them barely visible in dark mode.

Expected Result

✅ All delegate logos should remain clearly visible and maintain contrast in both light and dark themes.

Impact

• Reduces readability and user experience for stakers browsing the delegate list.

• Affects branding and professional appearance of the staking interface.
  

Wallet Address: io1tkw393kejmxwnd454twc6020sxcyvh5dxqmren

Device & Environment:

-Operating system: Windows 11 Pro

-Device model: A520MHP