Hi, I tried this circuit & it failed the first time. That try was the result of following the schematic, verbatim. For example, the line from the 100k resistor on first chip, running to pin 8 on the second chip. It was broken where it crossed pins 4/8 on the former chip, clearly indicating no connection. But there was a solid cross at the aforementioned line & the 470 resistor going to the red LED, which then appeared to continue on to power. Same w/ the yellow (had no orange) LED running off the second chip. Its 220 resistor appears to connect to pin 8 & then to power. So a bit of a "boo-boo'ed" schematic. But once I figured out that those were errors & corrected them, the circuit worked fine.
Second, are the resistor & cap values, critical? I mean increasing the 100k &/or 47k resistors caused the circuit to act erratic (i.e. the green & yellow or green & red, flashing or slowly changing, alternately). Also, increasing either of the 100uF caps, causes similar behavior. So, is it not possible to slow the cycle down?