I'm quite colorblind and can't see Feature/BugFix/SeucrityRelease dot color differences unless they are all next to each other. Shapes would also work.
Here's some color suggestions if you'd like them. I'm also happy to consult if you have different ideas and want to check if they work.
Feature Release #78b41f
Bug Fix: #1f78b4
Security Release: #b41f2e