First I have this unresolved problem that the H tile does not want to display in correct colors. It looks to me that it has to do with the fact that ODS 2nd ocean tile LCOST00F has only 28 colors in the palette. I have substituted both of the tiles , but it seems that new palette of new tiles is being adjusted short.
Also , I have tested some sea substitution in Balkan terrain. There I found nearly 38 or so full sea tiles , but strangely all the same. One of them has been substituted and brought interesting effect. I do not want to attempt to change all of the other tiles , but 38 could bring a lots of variations. This, plus all shore tiles, which are sooo

In ODS, in addition to the color paltette problem at min ditance, the very same sea tile gets strange violet tint. I know that there is some kind of shader here working , which makes also desert and green mountains sometimes brownish. I would like to control that - which file makes those changes happen?