for the lid, just get one of these
http://www.wickes.co.uk/MDF-Window-Board-22x219mmx1-5m/p/120515
and paint it whatever colour you want.
as for the wood/tile joint at the threshold, you can get threshold trims to accommodate different height flooring.
see here for ideas:
https://www.google.co.uk/search?q=t...1241&bih=540#q=threshold+trim+height&tbm=isch
http://www.wickes.co.uk/MDF-Window-Board-22x219mmx1-5m/p/120515
and paint it whatever colour you want.
as for the wood/tile joint at the threshold, you can get threshold trims to accommodate different height flooring.
see here for ideas:
https://www.google.co.uk/search?q=t...1241&bih=540#q=threshold+trim+height&tbm=isch
