Here I am with another combo suggestion with Leonid factor, but this time suggesting it for the December combo. The chosen palette revolves around the starry sky on a snowy winter night, taking into account the bluish tones of the December bases and the bluish purple of Leonid.
Obs: I saw comments about the idea of the base being added to July as the celestial lioness and I admit that I loved the idea, here's a suggestion

Disclaimer: the base used is a mix of Leonid + Ice

༶⊱ ᴘᴏʟᴀʀɪs ⊰༶




༶ Some examples with mutation ༶
== click to see full size ==

More suggestions: