While just sitting in one spot and shooting off your spheres does absolutely nothing except make them enter the pyramid, after sitting through the silk sails round, after collecting the third canopic jar, for two days, how come the game has reverted back to Luxor 2 and Amun Rising, where it sets up useless colors and you have to watch as the balls roll into the pyramid while long lines of same colored balls are rolling past your shooter, even shooting them off the edge of the screen sends the same color into your shooter? Makes me wonder if the people who distribute the game deliberately change the code so that you get to a point they think no one will get to and make it impossible to complete. No matter how challenging, easy, medium, hard, insane all the same all at the same level.
I used to think that, too, but decided it usually is a good thing. When a line gets close to a pyramid, the game gives you the colors that are closest to the pyramids.
I think getting and using powerups is the best way to beat such levels (especially the Scarabic one - where two lines go in and out of holes). On such levels, I'm most successful by making the line go backwards whenever possible, either by the green powerup or by making a hole in the line and then putting a ball that matches the ball on the left side onto the right side of the hole.
I don't think they have made it impossible. There are several now that have completed ALL boards on ALL levels of difficulty. I do know what you are describing and it is frustrating, but you have to create earlier on groups so that you can pull the line backwards. Some screens such as the "you scarab them" it doesn't pay to make them all one color.