You can always hack the shader ...In the oceans frag find :
vec4 color = ....
add below
color*=vec4(R,G,B,1);
Where you replace the RGB using float values in ranges 0..1 normally, but try 1,1,2 for extra blue, or 2,2,2 for twice intensity, but as Meta says they will probably look abit burned if set too high.