Maglev - Palette swapped railroad (Rails changed to sea blue, brown changed to grey)
Also needs this tilespec entry in [roads] section
Autoexplore - 'X' moved to the right side to uncover shield, despite being an advisor control, does not call other activities
Fortified - 'tower' trunk widened by 2 pixels and a second window spot added, cosmetic improvement and brings it in line with new fortifying icon
Airbase - monochromed to create contrast with new airstrip, similar to amplio
Full upkeep set added at bottom, including replacing existing ones
Road - Yellow bordered mini activity (replacing 'R')
Airbase - Yellow bordered mini activity (replacing 'A')
Fortress - Yellow bordered mini activity (replacing 'F')
Connect - Yellow double arrow (replacing 'C')
Inaccessible - high contrast monochrome ocean, uses oceanic shore layers
Also needs this tilespec entry:
blend_layer = 0
num_layers = 3
layer0_match_type = "water"
layer1_match_type = "water"
layer1_match_with = "water"
layer2_match_type = "water"
layer2_match_with = "water"
layer2_sprite_type = "corner"
mine_sprite = "tx.oil_mine"
Airstrip - single lane, original colored airbase
Outpost - shortened, gape-walled fortress
Aluminum - color inverted and adjusted, horizontally flipped iron
Uranium - monochromed gold
Saltpeter - color inverted, horizontally and vertically flipped, placement adjusted coal
Elephant - monochromed, edited buffalo (My lolephant isn't the greatest, but it's recognizably an elephant)
Railroad - Yellow bordered mini activity
Maglev - Yellow bordered mini activity
Airstrip - Yellow bordered mini activity
Outpost - Yellow bordered mini activity
Buoy - Yellow bordered mini activity
Fortifying - Yellow hollow tower
Convert - 'C' icon from original connect, right side placement