The fire wizard is very dynamic and purposeful in his pose and colour scheme. In contrast, the water wizard is far more serene. Not only his clothing, but also his skin tone needs to reflect this.
For starters, I painted his cloak Storm Blue, highlighted first with Enchanted Blue, then Ice Blue as the final highlight.
The dangly bits hanging from the wizard's shoulders and his hat are painted in Scaly Green, then highlighted in Jade Green, then Vile Green.
His face is first painted a mix of Codex Grey and Tanned Flesh, then highlighted with a few lighter layers, each time adding equal amounts of Rotting Flesh and Dwarf Flesh. This gives his skin a pallid 'corpse like' feel. This wizard's eyes are Codex Grey with a dot of white.
The water wizard is finished off by painting the details and decorations with Chainmail, then giving them an ink wash of black ink mixed with blue ink.