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Could you possibly be thinking of Hoota and Snoz
? It wasn't claymation, but the characters look like playdough and you could easily have misremembered after all this time. It also fits the description of being shorts, without dialogue. One creature is purple, the other is orange.
This?
"https://tvtropes.org/pmwiki/pmwiki.php/WesternAnimation/Morph
"

My sibling and I are trying to come up with a clay-mation show that probably aired in the late 90s/early 2000s on TV when we were kids because it had a distinctive intro tune that still gets stuck in their head years later (and is now stuck in mine 😅). The best we can figure is that:
Does that sound like it might ring a bell for anyone else?