Sass define rgba color

#1

my tabs icon has default opacity 0.7
i was trying to set opacity by sass variable but i got error:

overloaded function 'rgba' give wrong number of arguments
$colors: (
  primary:    rgb(254, 79, 26),
  secondary:  rgb(100, 100, 100)
);
$tabs-tab-color-inactive:    color($colors,secondary,1);

also i think opacity will not change if this sass would be ok.

#2

Do you mean the opacity for the android platform? You can use this sass variable in your theme/variables.scss to change the opacity:

$tabs-md-tab-opacity: 1;
#3
$tabs-md-tab-opacity: 1;

thank you.it’s worked on android and ok for now.
but what about define colors in sass as rgba, how to do that.
in this way it will work:

$color(
secondary: rgb(27,224,63);
...
)
$tabs-tab-color-inactive:    color($colors,secondary);
$tabs-md-tab-icon-color:	rgba($tabs-md-tab-color-inactive, $tabs-md-tab-opacity);

but if i use $colors directly it wont work:

$color(
secondary: rgb(27,224,63);
...
)
$tabs-md-tab-icon-color:	rgba(($colors,secondary), $tabs-md-tab-opacity);

does not work.