Thumbnail theme logos are not visually pleasing when selecting a site

• Type: Bug
• Status: Closed
• Resolution: Duplicate
• Affects Version/s: Master
• Fix Version/s: None
• Component/s: Frontend Infrastructure, Liferay Themes, Liferay Themes > Fjord, Liferay Themes > Porygon, Liferay Themes > Westeros Bank
• Labels: None
• Fix Priority: 3
• Bug Type: Regression Bug

Checkered background when selecting a site.

Steps to Reproduce:

1. Add porygon, westeros, or porygon site
2. Navigate to CP > compass icon ("Go to other Site")

Expected Result:
theme site cards have a working visually pleasing thumbnail image/logo for the theme

Actual Result:
theme site cards logos/thumbnail images do not look visually pleasing

Reproduced on:
Tomcat 9.0.17 + MySQL 5.7
Portal master GIT ID: 7bd8fb67a9086e3e109dc7c07d04706e1767a305