For example, you want to set 40% alpha transparence to #000000
(black color), you need to add 66
like this #66000000
.
```mermaid
sequenceDiagram
participant dotcom
participant iframe
participant viewscreen
dotcom->>iframe: loads html w/ iframe url
iframe->>viewscreen: request template
viewscreen->>iframe: html & javascript
iframe->>dotcom: iframe ready