If it's warm you will still be able to read flat signs too.

Heavy clothing forms a field of heat when other forms of energy interact with it it creates interference that allows you to see.

ir cameras piss me off. i want a camera that represents 1mm as red, 550μm as green and 250μm as blue. is that so much to ask?

File: spiral.png (2 KB, 481x482)

2 KB PNG

[...]

square 6:
(x, y) = (1, 3)
vertices: (x + 1, y + 1), (x – 1, y + 1), (x – 1, y – 1), (x + 1, y – 1)
facecolor: (1, 0, 1/2, 1)

square 7:
(x, y) = (1, 5)
vertices: (x + 1, y + 1), (x – 1, y + 1), (x – 1, y – 1), (x + 1, y – 1)
facecolor: (1, 0, 1, 1)

square 8:
(x, y) = (3, 5)
vertices: (x + 1, y + 1), (x – 1, y + 1), (x – 1, y – 1), (x + 1, y – 1)
facecolor: (1 – 1/Sqrt[8], 0, 1 – 1/Sqrt[8], 1)

square 9:
(x, y) = (3, 3)
vertices: (x + 1, y + 1), (x – 1, y + 1), (x – 1, y – 1), (x + 1, y – 1)
facecolor: (1 – 1/Sqrt[2], 0, 1 – 1/Sqrt[2], 1)

File: in two faces of color cube .png (2 KB, 484x278)

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square 1: (x, y) = (1, 9)
square 2: (x, y) = (3, 7)
square 3: (x, y) = (5, 5)
[...]
square 15: (x, y) = (17, 5)
square 16: (x, y) = (17, 7)
square 17: (x, y) = (17, 9)

every square:
vertices: (x + 1, y + 1), (x – 1, y + 1), (x – 1, y – 1), (x + 1, y – 1)
linewidth: 1/2
edgecolor: (1/2, 1/2, 1/2, 1)
facecolor: (Min[(x – 1)/8, 1], Max[0, (x – 9)/8], (y – 1)/8, 1)

File: G=0 face and R=1 face .png (3 KB, 484x259)

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n = 17
v = 2*n – 1
u = 2*v – 1
linewidth: 1/99
edgecolor: (1/2, 1/2, 1/2, 1)

FOR x = 1 TO u STEP 2
FOR y = 1 TO v STEP 2
vertices: (x + 1, y + 1), (x – 1, y + 1), (x – 1, y – 1), (x + 1, y – 1)
a = (x – 1)/(v – 1)
b = (y – 1)/(v – 1)
facecolor: (Min[a, 1], Max[0, a – 1], b, 1)
NEXT y
NEXT x