I think my second thought was the practical side of fixing the hexagons to size but where size permits perhaps those could work well, so down the side of the forum list, for example; and in headers, in favicons and small usage perhaps do without.
I got used to Keyhotee having a splash of red and miss that.. perhaps maroon sits better with blue, I don't know but I don't think anything would be lost from having red and perhaps yellow as splash eye catch. The more rare the use the more it will notice. The [Technical Support] forum was the other example that calls out for red and white hoop.
It's all good. Content matters more than presentation but you don't want to hear that