What is the main cause of traffic paint "bleed-through" (discoloration) when applied over fresh asphalt or freshly crack-sealed lines?

1. Solvents or oils in asphalt migrating upward into the un-cured paint film.
2. Applying glass retroreflective beads at a rate exceeding 10 pounds per gallon.
3. Spraying traffic paint when ambient humidity is lower than 30 percent.
4. Over-mixing silica sand into the paint pressure pot prior to spraying.