In Cheese Jump, the truckle jumps on platforms. The platforms are randomly generated and slowly get farther apart until a point. The platforms also change colors as you go on (about every 350 score), these color changes are referred to as "Levels". The colors of the platforms change in reverse mode.
The platforms were added in Basic Doodle Jump, the base code for Cheese Jump. In "Basic doodle jump" (Modified), Ian noticed that he kept dying at the point where the platforms would get too far apart and you couldn't skip them anymore. His solution was to make the platforms turn blue (Turquoise {#41d9d4}) when this happened (about 4500 score). He decided that he liked the changing of platform colors so he added a change at;
(Keep in mind that the scoring was different at this stage.)
Later in "Less basic doodle jump" Ian added a color change at;
20,000 (Pink {#db7995})
25,000 (Coral Tree {#ab6565}),
30,000 (Tacao {#edbc80}),
35,000 (Storm Dust {#636262})
and at 40,000 (Smokey Grey {#707070}) score.
All of these colors are the same today with the addition of one more color, Charcoal Grey (#404040).
In beta, Seth redesigned the scoring system to be more reliable. Now your score is the amount of platforms you have passed. The scores that you change level are
315
700
1,500
1,850
2,200
2,550
2,900
3,250
and at 3,600 score.
0/L1: Lime green (#41d953)
315/L2: Turquoise (#41d9d4)
700/L3: Lavender (#b886e3)
1,500/L4: Sahara Sand (#edeb79)
1,850/L5: Deep Blush (#db7995)
2,200/L6: Coral Tree (#ab6565)
2,550/L7: Tacao (#edbc80)
2,900/L8: Storm Dust (#636262)
3,250/L9: Smokey Grey (#707070)
3,600/L10: Charcoal Grey (#404040).
Bottom Block: Deep Carmine Pink (#eb4034).
0/L-1: Barney (#be26ac)
-315/L-2: Cardinal (#be262b)
-700/L-3: Medium Spring Green (#47791c)
-1,500/L-4: Denim Dark Blue (#121486)
-1,850/L-5: Eucalyptus (#24866a)
-2,200/L-6: Grey Teal (#549a9a)
-2,550/L-7: Dark Cerulean (#12437f)
-2,900/L-8: Star Dust (#9c9d9d)
-3,250/L-9: Oslo Grey (#8f8f8f)
-3,600/L-10: Pale Slate (#bebfbe).
Bottom Block: Topaz (#14bfcb).