Currently, there is a “Roblox Dark” theme which differs from the regular Dark theme by having font closer to Roblox’s typography, rather than Arial.
I like that Roblox Dark is more, well, “Roblox” themed! However I personally prefer to use light mode, and there is currently no light mode equivalent of this theme.
Seeing that the Creator Hub has recently received light mode, it would be pretty cool to also see a “Roblox Light” theme on the Developer Fourm!