Painting 3D resin printed cluster markers to hold TTC’s 3D sector markers.
Prime white and the center marker black and white. Paint the edges and sector wells with   Waaagh! Flesh  
Using   Waaagh! Flesh ,   Moot Green , and a blend of the two to color the ground. 
Add white dots around the sectors and/or rectangular white areas
Add patches of   Averland Sunset  for variety 
Add a color filter of   Tesseract Glow  over all but those to be painted blue
Paint the water areas with   Alaitoc Blue  Leaving the details white
Paint those white areas in the water with   Aethermatic Blue  contrast paint