Hiding Named Range based on validation selection on another WS

Hi there,

I've got a worksheet ("Main") that has a validation box that the user selects an option from (Range: H12:J13). the possible options are Red Red,Blue Blue, Colour Group, Rough Rough, Smooth Smooth, Texture Group.
on sheets(1) i have a list of named ranges. they are: RedRed, BlueBlue, ColourGroup, RoughRough, SmoothSmooth, TextureGroup.

The named ranges (eg RedRed) names are derived from the cell value of the first Row in column A of that bordered range. (note that the namedrange.name has no space whereas the validation selection does)

When the user selects an option (say RedRed) from sheet ' main' then all the named ranges except for RedRed should be hidden. Similarly for (BlueBlue, RoughRough, SmoothSmooth)

ColourGroup and TextureGroup on the other hand do not relate to a named range. They are values that are found in 2nd row below named ranges - common to more than one named range (in Col A row 2 of RedRed cell.value = ColourGroup & in Col A row 2 of BlueBlue cell.value = ColourGroup). When the user selects this option (Eg ColourGroup) then the RoughRough & SmoothSmooth named ranges should be hidden - whereas all the 'colours' are visible on sheets(1)

I've attached a sample WB