FIVE PLAYERS MATS FOR TERRAFORMING MARS. Surely it can't be a big deal". Just print out 5 copies, cut to fit (they are marked) and fit between the two layers of the players mat. If you really miss the colour of the original mats, there are details for downloading and printing a full colour PDF to go between the two layers.
Terraforming Mars Player Mat Overlays ONLY
Terraforming Mars Player Board
5 IMPROVED Terraforming Mars Player Mats Dual Layer
Terraforming Mars digital is a quick-playing alternative to tabletop : r/boardgames
TouchArcade
X5 Terraforming Mars Improved Player Board Overlays / Frames 3D Printed Board Game Accessories
Terraforming Mars Overlay, 6,49 €
Terraforming Mars Board Game - Award Winning Strategic Space Adventure Game for Family Game Night, Competitive Play & High Replay Value - Adults, Teens and lovers of Board Games by Stronghold
Set of 5 overlays, supplementary product for the player boards of Terraf. Mars Can be incorporated into TEFO (our insert for Terraf. Mars) Dimensions
5 overlays for the player boards of Terraforming Mars
I read that the early Terraforming Mars player boards were printed slightly different. If you do go with Terraforming Mars compatible acrylic overlay
UK Terraforming Mars Dual Layer Player Boards x5 Kickstarter Promo Accessory TFM