I just put 'when green flag pressed' at the beginning of my script.Obviously you can change it but it's the easiest way for me. The first 2 blocks I put speech blocks.Long speech for me is 10 seconds,but you can choose think blocks.Then I forget,until it comes to speech blocks. In'looks' in your block chooser you'll see 'change color effect'.By clicking it you can change effect.To make it hard to see,I set the effect to ghost effect.You can also change visibility by clicking it from 25, you can set it to any number.
This is a short,sharp program which didn't take long to code. I did this alone,so i'm proud with my program so far.